How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The ECU of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, be sure to check that there is no trouble in the multiplex communication system.

Fig 1: Combination Switch Control System Troubleshooting Flow Chart